Timber-cutting machine



' J. R. DAVENPORT.

UMBER CUTTINGVMACHINE.

APPLICATION mm) mm, 1919.

Patented May 4,1920.

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J. R. DAVENPORT. TIMBER CUTTING MACHINE.

APPLICATION FILED APR. 4; 19|9- v 1,338,977. Patented May 4, 1920.ZSHETS-SHEET 2- JOHN R. DAVENPORT, OF HOXIE, ARKANSAS.

TIMBER-CUTTING MACHINE.

Specification of Letters Patent.

Patented May 4, 1920.

Application filed April 4, 1919. Serial No. 287,610.

To all whom it may concern} Be it known that I, JOHN R. DAVENPORT, acitizen of the United States, residing at Hoxie, in the county ofLawrence and State of Arkansas, have invented certain new and usefulImprovements in Tmiber Cutting Machines, of which the following is aspecification.

My invention relates to new and useful improvements in timber cuttingmachines and more particularly to that type embodying a two man dragsaw, whereby the machine facilitates the saw being used by one maninstead of two.

An important object of my invention is to provide a device embodyingspring means for redrawing a saw through timberv after it has been drawnthrough the timber by manual means.

Another object of my invention resides in the provision of a device ofthe above mentioned char; cter embodying a plurality of guide rollers,one of which may be adjusted, so as to facilitate proper placement andoperation of the saw. Another object of my invention resides in theprovision of a device of the above mentioned character embodying .asupporting stake which is vertically adjustable so that themachine maybe placed in connection with logs of various diameters and thicknesses.

A still further object of my invention resides in the provision of adevice as above mentioned embodying supporting means which may be foldedinto close engagement with the body of the device to facilitate easy.

shipment of the invention. v

A still further object of the invention resides in the provision of adevice of the above mentioned character having means on one end thereoffor penetrating timber to support one end of the device. 7

Still another object of the invention re' sides in the provision of adevice including a plurality of cables, one of which is wound upon adrum while the other two cables are wound upon the axle of the drum, thefirst mentioned cable being connected with the saw while the last twonamed cables are connected with coiled springs for actuating the drum.

Other objects and advantages of my invention will become apparent duringthe course of the following description.

In theaccompanying drawings forming a part of the description andwherein like numerals are employed to designate like parts throughoutthe several views,

' Figure 1 is a side elevation of the inven- 'tlon as applied tea log.

Fig. 2 is a top plan of the same.

Fig. 3 is a transverse vertical section taken on the lines 3-3 of Fig.2.

Fig. 4: is a longitudinal vertical section through the invention.

Fig. 5 is a bottom plan.

Fig. 6 is an end elevation of the inven tion, and

Fig. 7 is a vertical transverse section through the invention adjacentthe drum, parts of the drum being broken away to disclose itsconstruction.

In the drawings, wherein is shown a preferred embodiment of myinvention, the numeral 8 designates the body portion of the invention,and consists of an elongated beam. Adjacent one 'end of this beam Iprovide a pair of spaced vertical standards 9, which form bearings foran axle 10 of the drum 11. As more clearly shown in Fig. 7, the axle anddrum are formed integral with each other.

The body portion 8 is provided with a pair of spaced slots 12, and theseslots are arranged adjacent the drum .11. As more clearly shown in Figs.4 and 5 of the drawings, a grooved horizontal roller 13 is rotatablymountediin each slot. A pair of longitudinally extending spaced coilsprings 14- are secured by one of their ends to hooks 15 secured to theunderside of the body portion 8, substantially intermediate its ends. Tothe opposite ends of these coiled springs, I secure cableslG whichextend along the underside of the body portion to engage the relativebottom of the grooved rollers 13,

then through the slot 12 to be wound over the axle sections 10 and aresecured thereto.

The saw cable.17 is secured to the groove in the drum 11 and this cableis fed from the relative bottom of the drum, so that when the cable 17is unwound from the drum, the cables 16 will be wound upon the axlesections 10 and thereby increase the tension of the coiled springs 1.4.The cable 17 extends longitudinally of the body portion between a pairof grooved guide rollers 18 which are rotatably mounted upon the upperface of the body portion adjacent the slots 12, and are arrangedvertically of the body portion. The free. end of the cable 17 isprovided with a hook 19 which is for detachable connection with theusual drag saw indicated by the numeral 20.

In the end of the body portion opposite the end thereof carrying thedrum 11, I

provide a plurality of openings 21, which are arranged transversely ofthe body portion. These openings are for the reception of the pin 22upon which is rotatably mounted the vertical grooved guide roller 23. InFig. 2 of the drawings, the guide roller 23 is shown in an adjustedposition adjacent one side of the body portion 8 so that the cable'17may engage with this roller and so that the drag saw 20 may be sopositioned when cutting timber that one face of the saw engages the sideof the body portion during the reciprocatory movement of the saw.

The transverse end of the body portion adjacent the guide roller 23 isprovided with a plurality of longitudinally extending prongs or spurs 24which are jabbed into the timber when it is desired to position themachine in operative relation with the timber.

To the under side of the opposite end of the body portion, I hinge amember 25 by means of the hinges 26. This member is provided with a bolt27, as more clearly shown in Fig. 4 of the drawings and this bolt is ofsuch length that its free threaded end extends a substantial distancebeyond the outer face of this member. A relatively large washer 28 and anut 29 is received upon the threaded end of the bolt for a purpose tohereinafter appear. 7

' In order to support the body portion of the machine in a horizontalplane with relation to the timber I provide a supporting stake 30 whichis more clearly shown in Fig. 6 of the drawings. I provide alongitudinally extending slot 31 in this supporting stake and this slotextends from the upper end of the stake to a point adjacent the oppositepointed end of the stake 32. The bolt 27 extends through the slot 31 andin order that the supporting stake may be held in close engagement withthe member 25 and in adjusted positions therewith, the nut 29 is rotatedto force the washer into close engagement with the outer face of thestake upon opposite sides of the slot 31. In order to close the upperopen end of the slot 31, I provide a bolt 33 which passes transverselythrough the free end of the supporting stake to bridge the slot.

In order that the stake may be held socurely in the ground and in avertical position, I provide a pair of supporting legs 34 which arepivotally connected to the stake by means of the bolts or other suitablemeans 35. A plurality of pairs of openings 36 are provided in thesupporting stake so dient to fall within the that the legs 34 may beadjusted vertically in relation to the stake.

When it is desired to employ the invention and the stake 30 and'legs 34are folded in close engagement with the under side of the body portion,the device is taken as a whole and jabbed into the log, so that theprongs or spurs 24 penetrate the log and are held firmly therein. Thelegs 34 and stake 30 are then swung downwardly, and as the stake 30 isadjusted by means of the bolt 27 with relation to the body portion, thestakes and legs are driven into the ground, until the body portionobtains a horizontal position. If the pointed ends of the legs andstakes engage an obstruction in the ground and it is impossible to drivethem down farther, the nut 29 may be loosened upon the bolt 27 so as topermit the washer 28 to loosely engage the stake so that the bodyportion 8 together with the bolt 27 may be adjusted in the slot 31 untilthe body portion is correctly positioned. The nut 29 is then of coursetightened sufficiently to cause the washer 28 to bind against the outerface of the stake upon opposite sides of the slot 31.

When the machine is in position, the drag saw is then connected with thehook 19 carried by the cable 17. The operator stands upon the oppositeside of the log from that on which the machine is arranged, grasps theend of the drag saw and pulls the same toward him. This of vcourse makesthe initial cut in the timber and'causes the cable 17 to feed from theunder side of the drum 11. The rotation of the drum of course causes itsintegral axle section 10'to rotate, which action winds the cable 16 uponthese axle sections against the tension of the coiled springs 14. Afterthe operator has drawn the drag saw toward him as far as is desired, hereleases his pull and the reaction of the coiled springs 14 will causethe drum 11 to rotate in such a manner that it will rewind the cable 17thereon and accordingly draw the drag saw toward thedrum 11. As moreclearly shown in Fig. 2 of the drawings, one face of the saw mayengagewith one side of the body portion to properly guide the saw, when theguide roller 23 is adjusted to the 115 opemng 21 which is nearest thisside of the bodyport on. When the saw ispositioned as shown 1n Fig. 2,it will be seen that the cable 17 engages one of the verticalguiderollers 18 so that the cablewill not be caused to slide off of eitherside of the drum 11.

The foregoing. description and the drawings have reference towhat may beconsidered the preferred or approved form of my 111vent1on; It is to beunderstood that I may make such changes in construction and arrangementin combination of parts, materials, dimensions, etc.,"as may-proveexpescope of the appended claims. 1 3 0 Having thus fully described myinvention what I claim as new and desire to secure by Letters Patent,is:

1. A timber cutting machine comprising a body portion, a saw, an axlemounted upon said body portion, a drum mounted upon said axle, a cableconnected to said drum and said saw, springs secured to said bodyportionand a pair of cables connected to said springs and wound over said axle,whereby said cables are wound upon the axle when the first named cableis unwound from the drum.

2. A timber cutting machine comprising a body portion, a saw, an axlemounted upon said body portion, a drum mounted upon said axle, a cableconnected to said drum and said saw, said body portion having a pair ofslots therein, a roller mounted in each slot, a pair of coiled springssecured to said body portion, and cables connected to said springs andto said axle and extending through said slot to engage said rollersoperating with said stake to retain the same in various adjustedpositions with relation to the body part.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN R. DAVENPORT. Witnesses:

T. B. HUDSON, ECKE DAVIS.

